Dall Sheep, or Mt. Goat... without a doubt. The hunt would be an incredible challenge and even without taking an animal would put me in some high country I have never seen before!
That said, my little savings jar at home has "Elk or Moose Hunt" written on it... b/c let's face it, 25 g's to go on a hunt is a bit outside of the common-man's price range (hell its kinda insane and possibly criminal to pay/charge that much money to hunt an animal)
And, Dave, Mermaids are protected...